diff --git a/src/humanize/number.py b/src/humanize/number.py
index 2fb22c6..ba0cb1f 100644
--- a/src/humanize/number.py
+++ b/src/humanize/number.py
@@ -361,9 +361,9 @@ def fractional(value: NumberOrString) -> str:
     frac = Fraction(number - whole_number).limit_denominator(1000)
     numerator = frac.numerator
     denominator = frac.denominator
-    if whole_number and not numerator and denominator == 1:
-        # this means that an integer was passed in
-        # (or variants of that integer like 1.0000)
+    if not numerator:
+        # no fractional part remains, so an integer was passed in
+        # (including 0, or variants of an integer like 1.0000)
         return f"{whole_number:.0f}"
 
     if not whole_number:
diff --git a/tests/test_number.py b/tests/test_number.py
index 78639c3..9f8abd8 100644
--- a/tests/test_number.py
+++ b/tests/test_number.py
@@ -187,6 +187,9 @@ def test_apnumber(test_input: int | str, expected: str) -> None:
         (-1.3, "-1 3/10"),
         (-2.5, "-2 1/2"),
         (-0.5, "-1/2"),
+        (0, "0"),
+        (0.0, "0"),
+        ("0", "0"),
     ],
 )
 def test_fractional(test_input: float | str, expected: str) -> None: